Beginning in the 1960s, in the midst of the triumph of molecular biology, a "quiet revolution" in our understanding of ourselves took place. Our evolution and that of all plants and animals is not due solely to the gradual accumulation of gene changes within species. In fact, we evolved from, and are comprised of, a merger of two or more different kinds or organisms living together. Symbiosis is at the very root of our being. Jan Sapp has assembled a systematic history of this emerging field, in this engaging, wide-ranging account of the growth of an important biological idea.
"Sapp's book is not only a scholarly account of one of the most important, yet neglected, areas of 20th-century biology, but it may also be pointing the way to a major element of biology in the next millennium."
– Tom Wakeford, University of York, New Scientist, December 1994
"Overall, the book is a delightful historical complement to the available texts describing symbiotic associations and a scholarly overview of the conceptual aspects of the subject. It will be enjoyed both by symbiologists and by those interested in the history of biological thought."
– S.J. Simpson, University of Oxford, Nature, Vol. 374, April 1995
"The author has assembled a systematic history of this emerging field, in this engaging, wide-ranging account of the growth of an important biological idea."
– Ethology, Ecology, & Evolution 7: 1995
"a thorough, balanced, and readable account of symbiosis research and theory from the 19th century to the present day"
– Taxon 44, November 1995